Caldwell AR500 Prairie Dog Popper Auto Reset Target AR500 Steel Yellow. Constructed using AR500 the finest rifle rated target steel available on the market. Each target includes a free-standing frame Prairie Dog shape AR500 target and ground stakes. The base of the frame sits 7in off the ground. When the target is struck with a bullet it falls backward and is automatically reset with the integrated reset spring. For maximum life expectancy impact velocities of 3000 fps or below and impact energies of 3500 ft. lbs. or less are recommended. Specifications for Caldwell AR500 Prairie Dog Popper Auto Reset Target: Manufacturer: Caldwell Thickness: 0.75 in Color: Yellow Fabric/Material: AR500 Steel Package Contents: Caldwell AR500 Prairie Dog Popper Auto Reset Target Caldwell 1178561: AR500 Prairie Dog Popper Auto Reset Target AR500 Steel Yellow